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Fernandes, C. A., Lima, E. B. & Costa, J. R. (2010). Broadband integrated lens for illuminating reflector antenna with constant aperture efficiency. IEEE Transactions on Antennas and Propagation. 52 (12), 3805-3813
C. A. Fernandes et al., "Broadband integrated lens for illuminating reflector antenna with constant aperture efficiency", in IEEE Transactions on Antennas and Propagation, vol. 52, no. 12, pp. 3805-3813, 2010
@article{fernandes2010_1731980211837, author = "Fernandes, C. A. and Lima, E. B. and Costa, J. R.", title = "Broadband integrated lens for illuminating reflector antenna with constant aperture efficiency", journal = "IEEE Transactions on Antennas and Propagation", year = "2010", volume = "52", number = "12", doi = "10.1109/TAP.2010.2078463", pages = "3805-3813", url = "http://www.it.pt/papjourn_pdf_p.asp?ID_PaperJournal=4869&id=1" }
TY - JOUR TI - Broadband integrated lens for illuminating reflector antenna with constant aperture efficiency T2 - IEEE Transactions on Antennas and Propagation VL - 52 IS - 12 AU - Fernandes, C. A. AU - Lima, E. B. AU - Costa, J. R. PY - 2010 SP - 3805-3813 SN - 0018-926X DO - 10.1109/TAP.2010.2078463 UR - http://www.it.pt/papjourn_pdf_p.asp?ID_PaperJournal=4869&id=1 AB - A new integrated shaped lens antenna configuration is described with frequency stable radiation pattern and phase center position across a broad 1:3 frequency band, which can be used for focal plane reflector feeding in quasi-optical radio telescope systems. The lens is compatible with the integration of ultrawide-band uniplanar printed feeds at its base and equally broadband mixing devices, like the Hot Electron Bolometer (HEB), although these are not used in the present work. Measurements on a scaled mm-wave lab prototype have confirmed stable performance versus frequency, with only +/- 1 dB directivity variation, and better than 94% Gaussicity, thanks to the possibility to impose a predefined output radiation pattern template. Simulations were performed to test the illumination of an off-set parabolic reflector by the lens radiation pattern, which confirmed reasonably constant aperture efficiency in the order of 78% across the 100% bandwidth. ER -